<?xml version="1.0" encoding="UTF-8"?>
<xs:schema targetNamespace="http://www.opengis.net/swe/1.0.1" xmlns:gml="http://www.opengis.net/gml" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:swe="http://www.opengis.net/swe/1.0.1" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0.1">
	<xs:annotation>
		<xs:documentation>Schema for defining position data (location, orientation, etc...) based on aggregate data types

				Copyright (c) 2007 OGC, All Rights Reserved.
				For conditions, see OGC Software Notice - http://www.opengeospatial.org/legal/
		</xs:documentation>
	</xs:annotation>
	<!-- ================================================= -->
	<xs:import namespace="http://www.opengis.net/gml" schemaLocation="../../gml/3.1.1/base/gml.xsd"/>
	<xs:include schemaLocation="./aggregateTypes.xsd"/>
	<!-- ================================================= -->
	<xs:element name="Position" type="swe:PositionType" substitutionGroup="swe:AbstractDataRecord">
		<xs:annotation>
			<xs:documentation>Position is given as a group of Vectors/Matrices, each of which can specify location, orientation, velocity, angularVelocity, acceleration or angularAcceleration or a combination of those in a composite state Vector. Each Vector can have a separate frame of reference or inherit the frame from the parent Position object.</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ........ -->
	<xs:complexType name="PositionType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractVectorType">
				<xs:sequence>
					<xs:element name="time" type="swe:TimePropertyType" minOccurs="0"/>
					<xs:element name="location" type="swe:VectorPropertyType" minOccurs="0"/>
					<xs:element name="orientation" type="swe:VectorOrSquareMatrixPropertyType" minOccurs="0"/>
					<xs:element name="velocity" type="swe:VectorPropertyType" minOccurs="0"/>
					<xs:element name="angularVelocity" type="swe:VectorOrSquareMatrixPropertyType" minOccurs="0"/>
					<xs:element name="acceleration" type="swe:VectorPropertyType" minOccurs="0"/>
					<xs:element name="angularAcceleration" type="swe:VectorOrSquareMatrixPropertyType" minOccurs="0"/>
					<xs:element name="state" type="swe:VectorOrSquareMatrixPropertyType" minOccurs="0"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ================================================= -->
	<xs:complexType name="AbstractMatrixType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractDataArrayType">
				<xs:attribute name="referenceFrame" type="xs:anyURI" use="optional">
					<xs:annotation>
						<xs:documentation>Points to a spatial reference frame definition. Coordinates of the vector will be expressed in this reference frame</xs:documentation>
					</xs:annotation>
				</xs:attribute>
				<xs:attribute name="localFrame" type="xs:anyURI" use="optional">
					<xs:annotation>
						<xs:documentation>Specifies the spatial frame which location and/or orientation is given by the enclosing vector</xs:documentation>
					</xs:annotation>
				</xs:attribute>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ================================================= -->
	<xs:element name="SquareMatrix" type="swe:SquareMatrixType" substitutionGroup="swe:AbstractDataArray">
		<xs:annotation>
			<xs:documentation>This is a square matrix (so the size is the square of one dimension) which is a DataArray of Quantities. 		It has a referenceFrame in which the matrix components are described</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ........ -->
	<xs:complexType name="SquareMatrixType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractMatrixType">
				<xs:sequence>
					<xs:element name="elementType" type="swe:QuantityPropertyType"/>
					<xs:group ref="swe:EncodedValuesGroup" minOccurs="0"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........ -->
	<xs:complexType name="VectorOrSquareMatrixPropertyType">
		<xs:annotation>
			<xs:documentation>Vector/SquareMatrix is a data-type so usually appears "by value" rather than by reference.</xs:documentation>
		</xs:annotation>
		<xs:choice>
			<xs:element ref="swe:Vector"/>
			<xs:element ref="swe:SquareMatrix"/>
		</xs:choice>
	</xs:complexType>
	<!-- ================================================= -->
	<!-- Areas and Envelopes -->
	<!-- ================================================= -->
	<xs:element name="GeoLocationArea" substitutionGroup="swe:AbstractDataRecord">
		<xs:annotation>
			<xs:documentation>Area used to define bounding boxes</xs:documentation>
		</xs:annotation>
		<xs:complexType>
			<xs:complexContent>
				<xs:extension base="swe:AbstractVectorType">
					<xs:sequence>
						<xs:element name="member" type="swe:EnvelopePropertyType" maxOccurs="unbounded">
							<xs:annotation>
								<xs:documentation>Is this an aggregate geometry?</xs:documentation>
							</xs:annotation>
						</xs:element>
					</xs:sequence>
					<xs:attribute name="name" type="xs:token"/>
				</xs:extension>
			</xs:complexContent>
		</xs:complexType>
	</xs:element>
	<!-- ================================================= -->
	<xs:element name="Envelope" type="swe:EnvelopeType" substitutionGroup="swe:AbstractDataRecord">
		<xs:annotation>
			<xs:documentation>Envelope described using two vectors specifying lower and upper corner points.
           This is typically use to define rectangular bounding boxes in any coordinate system.</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ........ -->
	<xs:complexType name="EnvelopeType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractVectorType">
				<xs:sequence>
					<xs:element name="time" type="swe:TimeRangePropertyType" minOccurs="0">
						<xs:annotation>
							<xs:documentation>Optionally provides time range during which this bounding envelope applies</xs:documentation>
						</xs:annotation>
					</xs:element>
					<xs:element name="lowerCorner" type="swe:VectorPropertyType"/>
					<xs:element name="upperCorner" type="swe:VectorPropertyType"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........ -->
	<xs:complexType name="EnvelopePropertyType">
		<xs:sequence minOccurs="0">
			<xs:element ref="swe:Envelope"/>
		</xs:sequence>
		<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
	</xs:complexType>
	<!--         Composite/Aggregate Components - Vectors and Matrices            -->
	<!-- ================================================= -->
	<xs:complexType name="AbstractVectorType" abstract="true">
		<xs:complexContent>
			<xs:extension base="swe:AbstractDataRecordType">
				<xs:attribute name="referenceFrame" type="xs:anyURI" use="optional">
					<xs:annotation>
						<xs:documentation>Points to a spatial reference frame definition. Coordinates of the vector will be expressed in this reference frame</xs:documentation>
					</xs:annotation>
				</xs:attribute>
				<xs:attribute name="localFrame" type="xs:anyURI" use="optional">
					<xs:annotation>
						<xs:documentation>Specifies the spatial frame which location and/or orientation is given by the enclosing vector</xs:documentation>
					</xs:annotation>
				</xs:attribute>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ================================================= -->
	<xs:element name="Vector" type="swe:VectorType" substitutionGroup="swe:AbstractDataRecord">
		<xs:annotation>
			<xs:documentation>A Vector is a special type of DataRecord that takes a list of numerical scalars called coordinates. The Vector has a referenceFrame in which the coordinates are expressed</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ............... -->
	<xs:complexType name="VectorType">
		<xs:complexContent>
			<xs:extension base="swe:AbstractVectorType">
				<xs:sequence>
					<xs:element name="coordinate" maxOccurs="unbounded">
						<xs:complexType>
							<xs:group ref="swe:AnyNumerical" minOccurs="0"/>
							<xs:attribute name="name" type="xs:token" use="required"/>
						</xs:complexType>
					</xs:element>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........ -->
	<xs:complexType name="VectorPropertyType">
		<xs:annotation>
			<xs:documentation>Vector is a data-type so usually appears "by value" rather than by reference. However, by reference is still useful when objects, for instance, share a location.</xs:documentation>
		</xs:annotation>
		<xs:sequence minOccurs="0">
			<xs:element ref="swe:Vector"/>
		</xs:sequence>
		<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
	</xs:complexType>
	<!-- ================================================= -->
	<!-- ================================================= -->
</xs:schema>
